Population Dynamics of Major Sucking Pests of Okra

The present study was carried out during kharif 2019 at the experimental site of College of Agriculture, Indore, Madhya Pradesh. The incidence of Amrasca biguttula biguttula was observed from 30^th Standard Meterological Week (SMW) to 41^th SMW, while Aphis gossypii was from 31^st to 40^th SMW, and Bemisia tabaci from 32^nd to 40^th SMW. The peak incidence of A. biguttula biguttula was observed @25.5 jassid/6 leaves in 35^th SMW followed by A. gossypii @30.15 aphids/6 leaves in the 36^th SMW, and B. tabaci @20.5 whitefly/6 leaves in 37^th SMW. Correlation coefficients of incidence with t,he weather factors revealed that A. biguttula biguttula and B.emisia tabaci exhibit a significant positive correlation with morning relative humidity (r = 0.58 and 0.57, respectively), while A gossypii showed a non-significant relationship with weather parameters.